N-[(1R,2R,5S,6S)-4-bromo-2-(1-ethoxypropoxy)-5,6-dihydroxycyclohex-3-en-1-yl]acetamide

(1S,2R,5R,6S)-6-acetamido-2,3-dibromo-5-(1-ethylpropoxy)-cyclohex-3-en-1-yl acetate

(3R,4R,5S)-4-acetamido-5-[(tert-butoxycarbonyl)-amino]-3-(1-ethylpropoxy)-1-bromocyclohexene